setStyle(string $name,

null|array|Traversable getAutocompleterValues()

string getName() Returns the canonical name of this helper.

bool has(string $name) Returns true if the command exists, false otherwise.

mixed getParameterOption(string|array $values, mixed $default = false, bool $onlyParams = false)

string getPaddingChar() Gets padding character, used for cell padding.

writeln(string|array $messages, $type = self::OUTPUT_NORMAL) Writes a message to the output and adds

OutputFormatterInterface

Question setHiddenFallback(bool $fallback)

int|string|array select(OutputInterface